As to the bearing, of the following, w

As to the bearing, of the following, which statement is not true?（）

Aff overheat is found, the engine must be stopped for inspection
BMuch heat of the crankcase door indicates that the bearing is overheated
CIf bearing clearance is too large, knocking will be heard in the crankcase
DIf bearing clearance is too large or too small, the white metal may be melted

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